Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"shallow water models"”.
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Propapation and attenuation characteristics of multilayered media
… technique. The solution obtained for two simple shallow water models is shown to agree well with the known exact solutions. Integration grid density is discussed and a minimum required density specified. The use of complex sound speeds to simulate bottom attenuation is reviewed. A numerical …
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Modulational instability in some shallow water wave models
… phenomenon of Stokes' periodic waves on the water surface. In this dissertation, we study this phenomenon for periodic traveling wave solutions of various shallow water wave models. We study the spectral stability or instability with respect to long wave length perturbations of small …
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Seasonality of the Agulhas Current with respect to near- and far-field winds
… Current seasonality is investigated using shallow water models, satellite measurements, and a 23-year transport proxy based on observations. A one-and-a-half layer reduced gravity model is shown to successfully reproduce the seasonal phasing of the current. This seasonality is found to be …
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Several applications of a model for dense granular flows
… modelling approaches based on various reduced (shallow water) models. With our numerical scheme, we are able to lift the assumptions required for other models, and make predictions in good qualitative agreement with the experimental data. An additional chapter describes the largely unrelated …
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Experimental and Numerical Modeling of Dam-Break and Levee-Breach Flows
… complete data set may be utilized to validate shallow water models and 3-D computational fluid dynamics models of free-surfaceflow. </p> <p> A two-dimensional idealized dam-break experiment was conducted in a straight flume. Dam failure was modeled by suddenly lifting a gate inside a flume for …
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A comprehensive modeling approach for urban rainfall - runoff simulation
… that the best results were obtained with a water depth-dependent Manning law. The results demonstrated the superiority of the depth - dependent infiltration method when compared to constant infiltration and the necessity of the depth - dependent roughness approach for accuracy and stability …